Vol. 80

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2018-12-28

A Dual-Polarized Omnidirectional Antenna with Two Kinds of Printed Wideband Low-Profile Radiating Elements

By Yuwei Zhang, Shu Lin, Shang Yu, Shoulan Liu, Guanjun Liu, and Alexander Denisov
Progress In Electromagnetics Research Letters, Vol. 80, 149-157, 2018
doi:10.2528/PIERL18111904

Abstract

This paper describes a printed wideband low profile omnidirectional dual-polarized antenna, which is a combination of vertical polarization (VP) and horizontal polarization (HP) elements. The VP element printed on a double-layered disk-shaped substrate is a modified monopole with loadings. The introduction of the material of the dielectric substrate can reduce the profile height in the polarized direction to 0.08λL (the wavelength at the lowest frequency). And loading metallic cylindrical block and shorting-posts in the dielectric substrate to improve the bandwidth are realized by using metal-vias. The HP element consists of a printed 8-element circular connected Vivaldi antenna array, and each element contains a director in the slot for the improvement of radiation pattern's out-of-roundness. Both the simulated and measured results indicate that operating bands of 2.2-4.52 GHz for VP and 2.4-3.8 GHz for HP. This proposed antenna has good isolation and omnidirectional patterns with the out-of-roundness less than 2.5 dB in the azimuth plane for both VP and HP, and it can be applied in mobile communication systems.

Citation


Yuwei Zhang, Shu Lin, Shang Yu, Shoulan Liu, Guanjun Liu, and Alexander Denisov, "A Dual-Polarized Omnidirectional Antenna with Two Kinds of Printed Wideband Low-Profile Radiating Elements," Progress In Electromagnetics Research Letters, Vol. 80, 149-157, 2018.
doi:10.2528/PIERL18111904
http://jpier.org/PIERL/pier.php?paper=18111904

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